Kuroshio current : 'Warm water with an average yearly sea surface temperature exceeding 29 c exists in the tropical equatorial region. This body of water is called the warm pool and extends over an area 30 times larger than Japan. It is located in the equatorial zone between New Guinnea and the international date line. This warm pool is created by trade winds blowing from east to west. '

'The central regions of the subtropical ocean gyres are broad expanses of generally calm air associated with the subtropical high-pressure systems. The light winds means calm seas, with little mixing by waves. The strong sun heats the water to considerable depth'